Add 21/63 and 7/6
1st number: 21/63, 2nd number: 1 1/6
21/63 + 7/6 is 3/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 6 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 63 × 2 = 126,
21/63 = 21 × 2/63 × 2 = 42/126 - Likewise, for the 2nd fraction, since 6 × 21 = 126,
7/6 = 7 × 21/6 × 21 = 147/126 - Add the two like fractions:
42/126 + 147/126 = 42 + 147/126 = 189/126 - 189/126 simplified gives 3/2
- So, 21/63 + 7/6 = 3/2
In mixed form: 11/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/63+7/6 21/63+14/6 21/63+7/12 21/63+21/6 21/63+7/18 21/63+35/6 21/63+7/30 21/63+49/6 21/63+7/42